Identification of labile-hydrogen functionalities in coal-derived liquids by /sup 31/P NMR spectroscopy
In recent publications from this laboratory, the application of /sup 31/P Fourier transform NMR spectroscopy to the analysis of -OH, -NH and -SH functionalities in coal extracts and pyrolysis condensates has been described. The authors indicated these studies with a series of reagents which contain two oxygen atoms in the five-membered phospholane ring system, and varying degrees of ring substitution. To determine the role of the heteroatoms within the ring system of the reagent and the size of the ring system, the authors are extending their investigations to include reagents such as Cl-P-(NMe)/sub 2/ 5-membered ring, Cl-P-S/sub 2/ 5-membered ring, and Cl-P-S/sub 2/ 6-membered ring. Here they describe the preliminary results with a series of model compounds derivatized with these reagents, and also with a coal low-temperature pyrolysis condensate.
- Research Organization:
- Ames Lab., IA (USA)
- DOE Contract Number:
- W-7405-ENG-82
- OSTI ID:
- 5933207
- Report Number(s):
- CONF-8809228-
- Journal Information:
- Prepr. Pap., Am. Chem. Soc., Div. Fuel Chem.; (United States), Journal Name: Prepr. Pap., Am. Chem. Soc., Div. Fuel Chem.; (United States) Vol. 33:4; ISSN ACFPA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
010600* -- Coal
Lignite
& Peat-- Properties & Composition
ALCOHOLS
AMINES
AROMATICS
CHEMICAL REACTIONS
CHEMICAL SHIFT
COAL LIQUIDS
DECOMPOSITION
DERIVATIZATION
FLUIDS
FOURIER TRANSFORMATION
HYDROXY COMPOUNDS
INTEGRAL TRANSFORMATIONS
ISOTOPES
LIGHT NUCLEI
LIQUIDS
MAGNETIC RESONANCE
NUCLEAR MAGNETIC RESONANCE
NUCLEI
ODD-EVEN NUCLEI
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PHENOLS
PHOSPHORUS 31
PHOSPHORUS ISOTOPES
PYROLYSIS
RESONANCE
STABLE ISOTOPES
STRUCTURAL CHEMICAL ANALYSIS
THERMOCHEMICAL PROCESSES
THIOLS
TRANSFORMATIONS